Visibility: Object is partially clipped

The property "Object is partially clipped" detects partially clipped objects (which are thus only partially visible on the page).

Clipping occurs in the following ways:

through an explicit clipping path, or a combination of several clipping plaths

through the implicit clipping path defined by the CropBox, or in its absence the MediaBox, of a page; an object is always completely clipped if it is outside the CropBox, or in its absence the MediaBox, of a page

through the combination of explicit clipping paths and the implicit clipping path defined by the CropBox, or in its absence the MediaBox, of a page

The following objects will not be found by this property:

objects that are completely clipped

objects that are only partially (in)visible because they are partially obliterated

The page show in the screenshot below contains three evenly spaced red squares, where the middle one is half clipped, and the rightmost one is fully clipped (and thus not visible). The clipping paths in effect are indicated by the blue dashed lines.

It can be seen below how the partially clipped red square in the middle is detected.